Core-plane or the like.



J. M. PARK.

.CORE PLANE OR THE LIKE.

APPLICATION FILED AUG-4.1917.

Patehted June 11, 1918.

2 SHEETS-SHEET I.

II- a J. M. PARK.

CORE PLANE OR THE LIKE.

APPLICATION FILED AUG-4.1917.

1,269,569. Patented June II 1918.

' 2SHEETSSHEET2.

(7., I cf 6 13 UNI ED JAMES M. BARK, or ROCK ISLAND}, rnnmois. essiemon or 0NE-HALF T0 w-rn Is J.

' BLIESENER, or ROCK rsnn-Nn, rLnrNoIs.

GORE-PLANE on;

s ecificatiomof Lett r a nt Pateirtedalune 11, 1918 Application fi led August, 1917; Serial N b, 18 51,501

T 0 all whom it may concern. Be it known that I, JAMES M. PARK,

citizen of the United States, and resident of Rock Island, 111;, have invented certain new and useful. Improvements in COre-Pl'anesjor ficiently in advance of the frame so as to.

perform its proper function.

A further object of my invention is to construct a plane the frame of the same be,- ing approximately of right-angular shape with cutter blades arranged to project through the apex ofthe frame and a handle so pivoted as to advance one or the other of the knives so as to perform its cutting function by merely manipulatin the handle.

The device is essentially e'sig'ned for use in pattern work for trimming out core boxes or for cutting any rounded or uneven surfaces, andthe structureis such that the knives can be properly adjusted to limit the projection of the cutting edge and the blades may be either flat, concave-convex or triangular or any other shape astounddesirable for the work tobe' planed.

A further object of my invention is to construct a plane, the frame of which being shaped right-angular in form and a pivotal handle supported therein, cutter blades supported in the frame and means supported on the body of the handle by which each blade is simultaneously advanced by the tilting movement of the handle thus, when the handle is operated one of the cutting edges of the blade is advanced to perform its operation while the other blade is shifted sufficiently to prevent obstruction, yet the mechanism is such that by the tilting operation of the handle each one of the blades may be advanced while the other is shifted out of the way. By a plane of this construction semi-circular surfaces as well as cylindrical surfaces may be planed and the device is especially designed fortl'ie formation and construction of what is termed core-boxes for casting use.

Figure 1, is a top plan viewv of my complete invention. t

Fig. 2, is a side view of'the same.

' Fig. 3, is a top plan view with the face plate removed showing the internal construe tion; i

i Fig. 4, is a: centralverticalsectional view taken through the same.

Fig. 5', is abottom plan view.

Fig. 6, is a topplan View of. the plane frame.

Fig. 7, is an-in'side view of the face plate detached from the frame.

8; is a deta-i'l'view of one of the cutter blades made use of;

"Referring to the drawings in detail 13 indicates 'a fi'iime'which is shaped preferably right angular' in form, the said frame provided with two contacting-surfaces 14' and an integral back-1 5 which connects-the" sa-m'e;

' The inner surface of the contacting surfaces 14* are proyi'ded with a blad'erecess lfi as that shown -iii-Fig. 3', and-on this surface" is su-pportedthe cutter blades- 17; These cutterbl ades as shown; in Fig. 8 comprise a body portion 18, a cutting edge 19' and a port ionfof itselfprovide'd with teeth formin'g-arackQO. 'lhese racksa're so constructed a sltoproperly engage with and cooperate;

withthe teeth 2 1 'formed on the peripheralsurface- 22 ofjthehandle front 23.

The construction of this body is clearly shown in Fig.- 3, a portion of the periphery being a complete circle and a portion of the periphery of thiscircle provided with a melt so shaped and designed to properly mesh with the rack of the cutter blades and this body portion is held in position in the frame and pivotally connected thereto by means of the screw 24. This body portion 23 terminates into 'a handle 25 by which the handle proper together with the body portion can be shifted to one side or the other and when so doing the cutter blades 17 will be advanced bringing its cutting edge through the opening 26 formed in the apex of the frame or back up the same bringing the cutter blade out of the opening.

In other WOlds by the shifting of the handle one blade is moved backwardwhile the other blade is advanced bringing its cutting edge through the apex of the frame so as to form its cutting function.

On the body portion 2-3 of the handle is provided two lugs 27 in which are placed screws 28. By the operation of these screws the movement of each blade is governed. The ends 29 of the screws designed to contact with the upper face. 30 of the integral projection 31 formed on the face plate and a portion of the integral projection 31 is hollowed out as that indicated by the numeral 32 which acts as a passage for the shavings to pass therethrough during the action of the planing process.

The essential feature of my invention is to construct a plane having a pair of cutter blades of any desirable shape supported in the frame and advanced and retarded by the manipulation of the handle so that a hollow surface or peripheral surface may be planed by a back and forward movement of the manipulation of the plane. The blade may be automatically placed in cutting position by the manipulation of the handle.

Having fully described my invention what I claim is:

l. A core plane of the class described comprising a right-angular frame, an opening formed in the apex, cutter blades slidably located therein, with their cutting edge adapted to be advanced through the apex, an oscillating handle by which the blades are advanced or retarded and an adjusting means located on the handle for limiting the advance of the cutting edge of the blades, substantially as specified.

2. A plane of the character described comprising a right angular plane frame, a face plate located thereon, a projection formed on the face plate which is provided with a cylindrical recess through which the shavings may be discharged, an opening for the apex of the frame, cutter blades provided with rack teeth located in the frame, an oscillating handle provided with rack teeth which mesh with the rack teeth of the flange and an adjusting means for limiting the movement of the blades for the oscillatingof the handle, substantially as specified.

A plane of the character described comprising a rectangular frame having an opening at its apex, a face plate attached thereto, an integral projection formed on the face. plate and projecting into the frame, said projection having a portion thereof hollowed out for the free passage of the shavings, a handle pivotally located in the frame, rack teeth formed on the handle, blades located in the frame, said blades provided with rack teeth which engage with the rack teeth of the handle and adjusting means arranged to contactwith the integral projection for limiting the movement of the blades, substantially as specified.

4. A core-plane comprising a body portion having two contacting surfaces which surfaces are to be arranged at right-angles, a face plate forming one side of the frame, an integral projection formed 011 the face plate and projecting into the frame, said projection being hollowed out to provide a passage for the shavings, a handle pivotally mounted in the frame, said handle having a pivoted portion the periphery of which being provided with rack teeth, cutter blades located in the frame and arranged to be advanced and retarded by means of the peripheral rack of the handle, adjusting screws located on the handle and arranged to contact with the integral projection of the face plate for limiting the projection of the cutting knives of the blades, said handle alternately advancing and retarding each of the blades by the oscillating movement of the handle, substantially as specified.

In testimony whereof, I have signed my name to this specification, in presence of two subscribing witnesses.

JAMES M. PARK.

lVitnesses Dr. E. H. MrcHAELIs, CARL KiiHL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

